Since I'm getting into trouble with unit spawning again and again (first for sieges, now for grenzers spawning skirmishers and also for the spawning of orders/information), I wanted to ask if I'm doing something wrong or if Param6 is indeed not functional?

I believed that each model with this ability would have a 100% (Param1) chance to spawn unit UID 24 (Param0) per turn. For each spawned element (not unit), the parent-element would have its chances to spawn another unit (!) by Param6 (-100). In my case, an element that has spawned a unit should spawn no more. However, that clearly is not the case. Units keep spawning happily, regardless of how many elements have already been spawned. Am I missing something?

PS: When I set Param1 to 50, it works pretty well. 10 units (each one element) spawn only slightly more (12) units (each two elements) than they should. It takes a few turns, however. At 12, they seem to stop.